docs: def set_fore(
          self, x: int, y: int, r: int, g: int, b: int, char: str
      ) -> None:
          """Set the character and foreground color of one cell.
  
          Args:
              x (int): X position to change.
              y (int): Y position to change.
              r (int): Red foreground color, from 0 to 255.
              g (int): Green foreground color, from 0 to 255.
              b (int): Blue foreground color, from 0 to 255.
              char (AnyStr): A single character str or bytes object.
          """
          i = self.width * y + x
          self.fore_r[i] = r
          self.fore_g[i] = g
          self.fore_b[i] = b
          self.char[i] = ord(char)